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Your search keyword '"Danica Janicijevic"' showing total 2 results
Start Over Author "Danica Janicijevic" Publisher elsevier
2 results on '"Danica Janicijevic"'

1. Dietary supplementation habits in international natural bodybuilders during pre-competition

Author

Pablo Jiménez-Martínez, Carlos Alix-Fages, Eric R. Helms, Sergio Espinar, Henar González-Cano, Eneko Baz-Valle, Danica Janicijevic, Amador García-Ramos, and Juan C. Colado

Subjects
Antidoping, Physical conditioning, Body composition, Ergogenic aids, Hypertrophy, Science (General), Q1-390, Social sciences (General), H1-99
Abstract

Bodybuilding is characterized by high-rates of sport supplementation. This is the first study to compare the supplementation patterns of winners (WB) and non-winners (NWB) among international natural bodybuilders during contest preparation. Fifty-six natural bodybuilders (5 women) (age = 28.85 ± 8.03 years; final body mass = 71.50 ± 10.28 kg), 19 WB (athletes who had achieved victory in an official natural bodybuilding championship at least once) and 37 NWB (athletes who never achieved victory), from 18 countries (55.36% from Spain) responded to this cross-sectional online survey related to their nutritional habits, strategies and supplementation practices. WB were significantly older (p = 0.024), completed more competitive seasons (p = 0.027) and participated in more competitions in the last contest year (p = 0.011). There were no significant differences between WB and NWB for years training for bodybuilding (p = 0.055), weeks of dieting for competition (p = 0.392), and body weight at the start (p = 0.553) and end (p = 0.330) of the season. Beverage and supplement consumption, purchasing patterns, and information sources did not differ between groups (p > 0.05). In conclusion, natural bodybuilding WB tended to be older and had more competitive experience, but shared similar supplementation protocols to NWB. Athletes' supplementation patterns were influenced by different sources of information. However, these natural bodybuilders mainly purchased their supplements through the internet without guidance from a coach or dietitian.

Published
2024
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2. Single-leg mechanical performance and inter-leg asymmetries during bilateral countermovement jumps: A comparison of different calculation methods

Author

Danica Janicijevic, Nejc Sarabon, Alejandro Pérez-Castilla, Darjan Smajla, Andrés Fernández-Revelles, and Amador García-Ramos

Subjects
force platform, Kinetic, Leg, Posture, Rehabilitation, Testing, kinetic, Biophysics, Reproducibility of Results, Force platform, Athletic Performance, testing, bilateral deficit, Bilateral deficit, Humans, Orthopedics and Sports Medicine
Abstract

Background: The possibility to selectively assess the force exerted by each leg during bilateral jumps has allowed sport scientists to explore inter-leg asymmetries, this metric being a rich source of research due to its potential applications to improve sports performance and reduce the risk of injury. The purpose of this study was to explore the reliability and agreement of single-leg mechanical performance and inter-leg asymmetry variables obtained by two procedures of analysis (Synchronous [simultaneous jump detection for both legs] and Asynchronous [specific jump detection for each leg]) during bilateral countermovement jumps (CMJs). Method: During a single testing session, 74 participants performed 5 maximal height bilateral CMJs on dual force platforms (Kistler, model 9260AA6, Winterthur, Switzerland), and the 2 trials that differed the least in terms of squat depth and jump height were considered for statistical analyses. The following mechanical variables were calculated separately for each leg using the Synchronous and Asynchronous procedures: mean force, peak force, and propulsive impulse. Results: The procedures showed comparable reliability, except for mean force and propulsive impulse of the left leg (higher for the Asynchronous procedure). The agreement between the procedures was very high, while the most reliable mechanical variable was mean force (CV≈2.9%, ICC≈0.98), followed by peak force (CV≈4.4%, ICC≈0.96) and propulsive impulse (CV≈6.4%, ICC≈0.91). Reliability of inter-leg asymmetries was greater using mean and peak force (ICC range=0.74–0.82) than using propulsive impulse (ICC range = 0.65–0.66). Significance: Both Synchronous and Asynchronous procedures can be used to evaluate single-leg mechanical performance (mean force, peak force, and propulsive impulse) and asymmetries, whereas mean force should be used to evaluate single-leg mechanical performance and mean or peak force to assess asymmetries., Ministry of Education, Science & Technological Development, Serbia 451-03-68/2020-14/200015 451-03-68/2020-14/200021, Universidad de Granada/CBUA

Published
2022

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